CompTIA A+ Display Types

Liquid-Crystal Display (LCD)

A flat-panel monitor that creates an image when liquid crystals become electronically charged.

Twisted Nematic (TN)

A class of LCD monitor that has fast response times to keep fast-moving images crisper, but monitors are brighter, consume more power, and have limited viewing angles.

In-Plane Switching (IPS)

A class of LCD monitor that offers truer color images and better viewing angles, but is expensive and has slower response times.

Vertical Alignment (VA)

Display technology used in mid-range LCD panels. VA refers to how the liquid crystal matrix is arranged within the panel. Crystals are tilted to be able to deliver color

Cold Cathode Fluorescent Lamp (CCFL)

▪ Lamp that sits behind the display and lights up the liquid crystal display to

show the colors and images properly on the screen

▪ CCFL requires AC voltage

Light-Emitting Diode (LED)

▪ Newer form of light that uses direct current (DC)

▪ Uses less power, leading to longer battery life and better

performance

Organic LED (OLED)

▪ Each pixel has its own separate LED that provides the light

▪ OLEDs can be made from plastic